diff options
Diffstat (limited to 'cgo/libclang.go')
| -rw-r--r-- | cgo/libclang.go | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/cgo/libclang.go b/cgo/libclang.go index f1ba3baa1..8e9af8a08 100644 --- a/cgo/libclang.go +++ b/cgo/libclang.go @@ -4,6 +4,7 @@ package cgo // modification. It does not touch the AST itself. import ( + "crypto/sha512" "fmt" "go/ast" "go/scanner" @@ -56,6 +57,7 @@ unsigned tinygo_clang_Cursor_isBitField(GoCXCursor c); int tinygo_clang_globals_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data); int tinygo_clang_struct_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data); int tinygo_clang_enum_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data); +void tinygo_clang_inclusion_visitor(CXFile included_file, CXSourceLocation *inclusion_stack, unsigned include_len, CXClientData client_data); */ import "C" @@ -114,6 +116,7 @@ func (p *cgoPackage) parseFragment(fragment string, cflags []string, posFilename } defer C.clang_disposeTranslationUnit(unit) + // Report parser and type errors. if numDiagnostics := int(C.clang_getNumDiagnostics(unit)); numDiagnostics != 0 { addDiagnostic := func(diagnostic C.CXDiagnostic) { spelling := getString(C.clang_getDiagnosticSpelling(diagnostic)) @@ -134,10 +137,36 @@ func (p *cgoPackage) parseFragment(fragment string, cflags []string, posFilename } } + // Extract information required by CGo. ref := storedRefs.Put(p) defer storedRefs.Remove(ref) cursor := C.tinygo_clang_getTranslationUnitCursor(unit) C.tinygo_clang_visitChildren(cursor, C.CXCursorVisitor(C.tinygo_clang_globals_visitor), C.CXClientData(ref)) + + // Determine files read during CGo processing, for caching. + inclusionCallback := func(includedFile C.CXFile) { + // Get full file path. + path := getString(C.clang_getFileName(includedFile)) + + // Get contents of file (that should be in-memory). + size := C.size_t(0) + rawData := C.clang_getFileContents(unit, includedFile, &size) + if rawData == nil { + // Sanity check. This should (hopefully) never trigger. + panic("libclang: file contents was not loaded") + } + data := (*[1 << 24]byte)(unsafe.Pointer(rawData))[:size] + + // Hash the contents if it isn't hashed yet. + if _, ok := p.visitedFiles[path]; !ok { + // already stored + sum := sha512.Sum512_224(data) + p.visitedFiles[path] = sum[:] + } + } + inclusionCallbackRef := storedRefs.Put(inclusionCallback) + defer storedRefs.Remove(inclusionCallbackRef) + C.clang_getInclusions(unit, C.CXInclusionVisitor(C.tinygo_clang_inclusion_visitor), C.CXClientData(inclusionCallbackRef)) } //export tinygo_clang_globals_visitor @@ -772,3 +801,9 @@ func tinygo_clang_enum_visitor(c, parent C.GoCXCursor, client_data C.CXClientDat } return C.CXChildVisit_Continue } + +//export tinygo_clang_inclusion_visitor +func tinygo_clang_inclusion_visitor(includedFile C.CXFile, inclusionStack *C.CXSourceLocation, includeLen C.unsigned, clientData C.CXClientData) { + callback := storedRefs.Get(unsafe.Pointer(clientData)).(func(C.CXFile)) + callback(includedFile) +} |